TABLE 2.

Levels of various characteristics within categories of body fatness in the Pediatric Rosetta Body Composition Project¹

Sex and SF sum category2	Subjects	Age	Nonwhite	CDC BMI z score	Obese	SF sum	PBFSlaughter	PBFDXA	PBFSlaughter – PBFDXA
	n	y	%		%	mm	%	%	%
Boys
<15 mm	143	9.8 ± 73	70	−0.39 ± 1.1	0	12 ± 2	9.9 ± 3	9.6 ± 4	0.5 ± 3
15–24 mm	240	11.9 ± 6	71	0.28 ± 0.9	2	18 ± 5	15.9 ± 5	14.5 ± 7	1.5 ± 5
25–49 mm	178	12.4 ± 6	79	1.22 ± 0.7	22	33 ± 12	28.5 ± 9	25.7 ± 10	2.6 ± 6
≥50 mm	65	12.2 ± 4	80	2.10 ± 0.5	89	61 ± 19	49.4 ± 15	38.9 ± 8	12.0 ± 10
Girls
<20 mm	149	9.1 ± 4	70	−0.26 ± 1.2	0	16 ± 5	15.5 ± 5	15.4 ± 6	−0.6 ± 5
20–34 mm	213	12.0 ± 6	71	0.32 ± 1.0	1	26 ± 7	23.3 ± 4	24.5 ± 7	−0.9 ± 5
35–59 mm	149	13.0 ± 5	84	1.19 ± 0.8	24	43 ± 10	33.2 ± 5	35.0 ± 7	0.2 ± 6
≥60 mm	59	13.5 ± 5	80	2.06 ± 0.6	80	72 ± 17	49.0 ± 9	43.5 ± 7	5.8 ± 9

¹PBF_DXA, percentage body fat estimated by using dual-energy X-ray absorptiometry; PBF_Slaughter, percentage body fat estimated by using the Slaughter skinfold-thickness equations; SF sum, sum of subscapular and triceps skinfold thicknesses.

²Cutoffs for the SF sum categories approximate the 33rd, 67th, and 90th percentiles within each sex; cutoffs were rounded to the nearest 5 mm.

³Median ± IQR (all such values).